Re: Taking apart Lisa - cleaning

    I certainly understand about the necessity to replace all old capacitors. I have restored equipment much older than the Lisa in the past. This was something I was planning on doing very soon, not to mention keeping the Lisa from being used in the meantime. I was just making the statement that I believed that the previous problem had been fixed in the past, and that the power supply isn't missing any parts.

    On this note, does anyone think capacitors could be the problem with my Widget? I suppose this could be the case, although I am guessing it is something more complicated. Does anyone have a compiled list of capacitors needed to do a full recap of Lisa, or is that something that hasn't been documented? I may as well make a list for those interested in doing so in the future, if there isn't one yet.

    Also, can anyone direct me to a source for the missing feet pads that Philip told me about in his reply? I really don't like the Lisa rocking back and forth, and if they are similar to the pads used on the keyboard, I would presume there would be a source for them somewhere, as they were probably bought "off the shelf" rather than custom made for the Lisa project.

-Chris
----- Original Message -----
From: "Jason Perkins" <quanda_computing_at_email.domain.hidden> To: "LisaList" <lisalist_at_email.domain.hidden> Sent: Wednesday, November 02, 2005 9:30 AM Subject: Re: Taking apart Lisa - cleaning

> You can do the caps now while everything is still working, or later after
> wong voltages have been going to the device for a while. Which would you
> prefer?
>
> -J
> ----- Original Message -----
> From: "Chris Riedl" <zap_at_email.domain.hidden>
> To: "LisaList" <lisalist_at_email.domain.hidden>
> Sent: Wednesday, November 02, 2005 4:31 AM
> Subject: Re: Taking apart Lisa - cleaning
>
>
>> Actually, the Lisa appears to be just fine, other than the ghost
>> Widget. I am guessing that something failed in the past and the power
>> supply was repaired or replaced. I wouldn't expect that someone doing
>> that job would go through the trouble of taking the entire machine apart
>> to clean up the mess.
>>
>> -Chris
>> ----- Original Message -----
>> From: "Dr. Helmut Post" <helmut_post_at_email.domain.hidden>
>> To: "LisaList" <lisalist_at_email.domain.hidden>
>> Sent: Wednesday, November 02, 2005 4:19 AM
>> Subject: Re: Taking apart Lisa - cleaning
>>
>>
>>> Hi,
>>> I have replaced all old electrolytic caps and the power surge caps in my
>>> Lisa- no more problems- and the Voltages are more stable than ever
>>> before.
>>> I have even exchanged all electrolytic caps in the video circuit- the
>>> picture is now much better- the slight jitter is gone.
>>> I'd recommend everyone to exchange all electrolytic caps inside the PSU
>>> and
>>> the Video circuit- it makes a big difference and protects the Lisa for
>>> the
>>> future.
>>>
>>>
>>> ----- Original Message -----
>>> From: "Chris Riedl" <zap_at_email.domain.hidden>
>>> To: "LisaList" <lisalist_at_email.domain.hidden>
>>> Sent: Wednesday, November 02, 2005 9:37 AM
>>> Subject: Re: Taking apart Lisa - cleaning
>>>
>>>
>>>> Well, that was certainly an interesting escapade. Apparently a
>>>> power
>>>> supply cap blew up sometime in the past, and there was crusted
>>>> electrolyte
>>>> all over the one side. Some cleaning of the chassis and case later, I
>>> have
>>>> got the Lisa booting up. However, it just appears as if the Widget is
>>>> not
>>>> present to the system, as it only shows the floppy for startup. The
>>> Widget
>>>> spins up and sounds normal, but I guess it isn't being seen by the
>>> hardware.
>>>> Any suggestions or things to try to pinpoint this further?
>>>
>>> I'd recommend to turn the voice coil actuator manually during the
>>> spin-up,
>>> self test procedure of the Widget.
>>> Sometimes it helps....
>>>
>>> Helmut
>>>
>>>
>>>
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